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Finding the Fourth Proportional to 21,865,518.40, 32,751,038.40 and 18,086,382.40

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Solution

The fourth proportional to 21,865,518.40, 32,751,038.40 and 18,086,382.40 is: 27,090,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865,518.40 : 32,751,038.40 = 18,086,382.40 : x
  2. Step 2: Convert to fraction form
    21,865,518.40/32,751,038.40 = 18,086,382.40/x
  3. Step 3: Cross multiply
    21,865,518.40x = 32,751,038.40 × 18,086,382.40
  4. Step 4: Simplify right side
    21,865,518.40x = 592,347,804,499,484.12
  5. Step 5: Solve for x
    x = 592,347,804,499,484.12/21,865,518.40
  6. Step 6: Final answer
    x = 27,090,499.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.